SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Lima,Jô de Farias; Silva,Thibério Carvalho da; Silva,Luis Mauricio Abdon da; Garcia,Jamile da Silva.

The present paper is a pioneering study on the Brachyura bycatch associated with the artisan prawn fisheries at the mouth of the Amazon River. The study was conducted at four collection sites distributed along the mouth of the Amazon River between the months of January/2009 and January/2010. The animals were caught using handcrafted traps called "matapi", which are used by prawn fisherman in the region. Twenty matapis were used at each collection site. A total of 145 specimens were captured and six species were identified, all belonging to the Trichodactylidae family - Sylviocarcinus maldonadoensis, S. pictus, S. devillei, Valdivia serrata, Dilocarcinus septemdentatus and D. pagei. The most representative species, S. maldonadoensis, S. pictus and S....

The mineralogy and chemistry of the German and Portuguese tiles used to face a historic building in the Amazon region and their natural susceptibility to tropical weathering

Palavras-chave: Macrobrachium; Prawn fishing; Crustaceans; Amazon region; Trichodactylidae.

Ano: 2013

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000100011

Costa,Marcondes L. da; Sanjad,Thais A.B.C.; Paiva,Rosildo S..

During the 19th century, the most prominent buildings of the city of Belém were faced entirely with tiles manufactured in Portugal and Germany, which now exhibit distinct degrees of degradation. The Pinho mansion is one of the most important of these buildings and was selected for the investigation of the action of the tropical Amazonian climate on the degradation of the tiles. To achieve this objective, the tiles were mapped for organic and inorganic degradation, and samples were collected for analysis. The minerals were determined by XRD, the chemical composition by classical wet methods and SEM/EDS, and the microorganisms under the microscope. The results show that the German and Portuguese tiles are quite different in their composition. While both...

Genetic diversity among accessions of sacha inchi (Plukenetia volubilis) by phenotypic characteristics analysis

Palavras-chave: German and Portuguese tiles; Degradation; Tropical weathering; Amazon region.

Ano: 2013

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300008

RODRIGUES,Haroldo Silva; BORÉM,Aluízio; VALENTE,Mágno Sávio Ferreira; LOPES,Maria Teresa Gomes; CRUZ,Cosme Damião; CHAVES,Francisco Célio Maia; BEZERRA,Caroline de Souza.

ABSTRACT Sacha inchi (Plukenetia volubilis) is native to the Amazon region and has a high seed content of mono and polyunsaturated fatty acids, making it interesting for the pharmaceutical and cosmetic industry. The purpose of this study was to analyze sacha inchi genetic diversity and describe accessions based on phenotypic characteristics. Fruits and seeds of 25 accessions from the sacha inchi genebank of Embrapa Amazônia Ocidental in Manaus, Amazonas state, were sampled and biometrically measured. The data were subjected to analysis of variance, Mahalanobis distance, canonical correlation, and genetic diversity among and within accessions by analysis of molecular variance (AMOVA). There were significant differences among the means of the analyzed...

Tipo: Info:eu-repo/semantics/report

Palavras-chave: Euphorbiaceae; Biometrics; Amazon region; Genetic resources.

Ano: 2018

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672018000200093

Birds associated with treefall gaps in a lowland forest in southwestern Brazilian Amazonia

LIMA,Jônatas; GUILHERME,Edson.

ABSTRACT Natural communities are dynamic systems in time and space. The spatial distribution of plants and animals tends to coincide with the availability of resources needed for the survival and reproduction of each species. Natural treefall gaps offer a number of resources that influence the distribution of birds within the forest. We compared the understory bird assemblages of natural treefall gaps (15 sampling points) with those found in the adjacent forest (15 points) in the Humaitá Forest Reserve in southwestern Brazilian Amazonia. We used mist-nets to sample birds and obtained 700 captures of 105 species. Species richness, number of individuals, and species composition were all similar between gaps and forest, although six species presented some...

Intestinal parasites in two indigenous ethnic groups in northwestern Amazonia

Palavras-chave: Tropical forests; Amazon region; Forest fragment; Understory.

Ano: 2021

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672021000100042

OLIVEIRA,Raylene Andrade; GURGEL-GONÇALVES,Rodrigo; MACHADO,Eleuza Rodrigues.

ABSTRACT Approximately 90% of the population in the northwestern Amazonia is composed of indigenous people and their healthcare is still a challenge. The objective of this study was to determine the frequency of parasites in two indigenous ethnic groups (Baré and Baniwa) in northwestern Amazonia. Stool samples from 270 individuals (199 Baniwa and 71 Baré) were analyzed using Richie's method and the spontaneous sedimentation method. Statistical differences among the proportions of infected individuals based on gender, age, and ethnicity were determined. All individuals were infected by protozoans or helminths. The most frequent parasites in the indigenous people were Ascaris lumbricoides (73%), Entamoeba spp. (53%), and Giardia intestinalis (48%). Protozoan...

Diversity of yam bean ( Pachyrhizus spp. Fabaceae) based on morphoagronomic traits in the Brazilian Amazon

Palavras-chave: Indigenous Population; Parasitic Diseases; Stool samples; Amazon region.

Ano: 2016

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000300241

SILVA,Edinei Santos da; FILHO,Danilo Fernandes da SILVA; TICONA-BENAVENTE,César Augusto.

ABSTRACT Yam bean is a non-conventional horticultural crop adapted to the Amazon region. It presents edible roots, yet, its seeds contain cytotoxic components such as rotenone and pachyrhizin. The Instituto Nacional de Pesquisas da Amazonia has 64 yam bean genotypes in its germplasm bank, however, their diversity is unknown. The aim of this study was to assess the diversity of these genotypes using 10 morphoagronomic traits, plant height, number of secondary branches, shoot biomass, stem diameter, root biomass, number, length, diameter, length/diameter ratio (L/D), and shape. The accessions were planted on non-flooded land, Manaus, Amazonas (02º 59'48.2''S and 60º 01' 22.4''W) in completely randomized design with three replicates and three plants per plot...

Decapod crustaceans used as food by the Yanomami Indians of the Balawa-ú village, State of Amazonas, Brazil

Palavras-chave: Feijão-macuco; Jacatupé; Biodiversity; Amazon region.

Ano: 2016

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000300233

Magalhães,Célio; Barbosa,Ulysses C.; Py-Daniel,Victor.

The Yanomami are a group of South American Indians that live in the rainforest along the borderlands of Brazil and Venezuela. They depend on hunting, gardening and wild food for survival; crustaceans are a highly prized food item in their diet. Taxonomical and ethnozoological aspects of the Yanomami Indians of the Balawa-ú village, state of Amazonas, Brazil, related to the crustaceans are described. Information and specimens were obtained from August to December, 2003. Interviews were conducted with residents of the village and focused on questions about species exploited, indigenous names, modes of capture and use of the species. One shrimp species of the family Palaemonidae (Macrobrachium brasiliense) and two crab species of Trichodactylidae...

Mercury and methylmercury concentration assessment in children's hair from Manaus, Amazonas state, Brazil

Palavras-chave: Ethnozoology; Yanomami Indians; Amazon region; Freshwater decapod; Indigenous name.

Ano: 2006

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672006000300013

Farias,Luciana A.; Fávaro,Déborah I. T.; Pessoa,Artemiza; Aguiar,Jaime P. L.; Yuyama,Lúcia K. O..

The present study evaluated Hg and MeHg content in hair samples of 201 children 2 to 7 years old, living in six neighborhoods of the city of Manaus, Amazonas State, Brazil. In general, the total Hg and MeHg median ranges in hair were similar (0.91 to 1.71 mg kg-1) except for the São Jose neighborhood, which was lower (0.16 mg kg-1). De spite the fact that the Manaus population consumes fish as part of the normal dietary intake, the Hg hair levels were below the level for an adult population not exposed to mercury (2.0 mg kg-1). These data were compared to demographic, socioeconomic information and eating habits of the families that took part in the study. The results were also compared to other published data from the Amazon region, other regions of Brazil...

The systematic and biogeographical status of Fredius reflexifrons (Ortmann, 1897) and Fredius fittkaui (Bott, 1967) (Crustacea: Brachyura: Pseudothelphusidae) from the Amazon and Atlantic Guianas River basins

Palavras-chave: Mercury; Methylmercury; Children's hair; Amazon region.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672012000200015

MAGALHÃES,Célio; RODRÍGUEZ,Gilberto.

There is considerable confusion in the literature regarding the systematic position and distribution of two pseudothelphusid crabs originally described as Potamocarcinus reflexifrons Ortmann, 1897 and Potamocarcinus reflexifrons fittkaui Bott, 1967, and now included in the genus Fredius Pretzman, 1965, as F. reflexifrons and F. fittkaui. Study of numerous specimens from recent collections, together with a critical analysis of the data published in the literature, shows that both taxa could be easily separated by gonopodal characters. The two species occupy discrete areas of distribution along the main axis of the Amazon River and in the upper Rio Negro Basin, respectively, with an overlap in the Atlantic Guianas. It is postulated that they originated from...

Mineralogical and geochemical influences on sediment color of Amazon wetlands analyzed by visible spectrophotometry

Palavras-chave: Pseudothelphusidae; Fredius; Freshwater crabs; Amazon region; Biogeography.

Ano: 2002

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672002000400677

Guimarães,José Tasso Felix; Cohen,Marcelo Cancela Lisboa; França,Marlon Carlos; Silva,Any Kelly Terra da; Rodrigues,Suyanne Flavia Santos.

Based on sedimentological and geochemical data, this work relates spectrophotometric measurements with sediment composition and its application in palaeoecological studies of Amazon wetlands. The CIELAB values are directly related to mineralogical and chemical composition, mostly involving quartz, iron oxyhydroxides and sulfides (e.g. pyrite), and total organic carbon. Total organic carbon contents between 0.4-1%, 1-2%, 3-5% and 15-40% were related to L* (lightness) data of 27, 26-15, 7-10 and 7 or less, respectively. The CIELAB values of a deposit in Marabá, Pará, were proportional to variations in quartz and total organic carbon contents, but changes in zones of similar color, mainly in the +a* (red) and +b* (yellow) values of deposits in Calçoene, Amapá...

Useful plants referenced by the naturalist Richard Spruce in the 19th century in the state of Pará, Brazil

Palavras-chave: Sedimentology; Amazon region; Munsell color systems; Mineralogy; Chemical composition.

Ano: 2013

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672013000300009

Acta Botanica

Santos-Fonseca,Dyana Joy dos; Coelho-Ferreira,Márlia; Fonseca-Kruel,Viviane Stern da.

ABSTRACT The present work sought to study the biocultural collections made by the naturalist Richard Spruce in the 19th century while in the state of Pará, Brazil. The material is largely deposited in the Herbarium and the Museum of Economic Botany at the Royal Botanic Gardens, Kew, UK. Complementary studies were undertaken in Brazilian institutions to gather more information about the useful plants cited by Spruce for Pará and their respective vernacular names and uses in the 19th century. Information was also gathered concerning the current uses of the plants by analyzing contemporary ethnobotanical studies. A total of 54 vernacular names of useful plants were recovered, including 51 native species of which 33 are used for construction purposes, 18 as...

Morphology and morphometry of upland lakes over lateritic crust, Serra dos Carajás, southeastern Amazon region

Palavras-chave: 19th century naturalists; Amazon region; Biocultural collections; Historic ethnobotany; Useful plants.

Ano: 2019

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019000200221

SILVA,MARCIO S. DA; GUIMARÃES,JOSÉ T.F.; SOUZA FILHO,PEDRO W.M.; NASCIMENTO JÚNIOR,WILSON; SAHOO,PRAFULLA K.; COSTA,FRANCISCO R. DA; SILVA JÚNIOR,RENATO O.; RODRIGUES,TARCÍSIO M.; COSTA,MARLENE F. DA.

ABSTRACT High-resolution satellite images, digital elevation models, bathymetric and sedimentological surveys coupled with statistical analysis were used to understand the physical environment and discuss their influence on water quality of the five upland lakes of Serra Sul dos Carajás, southeast Amazonia. The lakes have mid-altitude ranges (elevation), very small (catchment) and shallow to very shallow (central basins). Based on the length, area and volume, Violão and TI (Três Irmãs)-3 lakes may present large vertical movements of the water due to wind action and weakly stratified waters. Trophic conditions based on depth and shore development (Ld) parameters must be used with caution, since Amendoim Lake is relatively deep, but it is oligotrophic to...

Occurrence of Cymbasoma longispinosum Bourne, 1890 (Copepoda: Monstrilloida) in the Curuçá River estuary (Amazon Littoral)

Palavras-chave: Lateritic crust; Lakes; Limnology; Geomorphology; Amazon region; Carajás.

Ano: 2018

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401309

Leite,Natália R.; Pereira,Luci C.C.; Abrunhosa,Fernando; Pires,Marcus A.B.; Costa,Rauquírio M. da.

The present work was carried out to verify the occurrence and distribution of Cymbasoma longispinosum Bourne, 1890 in a tropical Amazon estuary from North Brazil. Samplings were performed bimonthly from July/2003 to July/2004 at two different transects (Muriá and Curuçá rivers) situated along the Curuçá estuary (Pará, North Brazil). Samples were collected during neap tides via gentle (1 to 1.5 knots) 200 μm-mesh net tows from a small boat. Additional subsurface water samples were collected for the determination of environmental parameters. Males and females of Cymbasoma longispinosum were only observed during September and November/2003. The highest number of organisms was found in September/2003 at the Muriá River transect. The presence of C....

Land use drives change in amazonian tree species

Palavras-chave: Amazon region; Monstrilloida; New occurrence; Tropical estuary.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000300005

VIEIRA,IMA CÉLIA G..

Abstract: The Amazonian rainforest has been subjected to exceptionally high rates of land use change (LUC), primarily for pasture. We present here an analysis of the impact of LUC on trees from studies made in Pará state. LUC results in drastic declines in native species richness, changes species composition and impacts community resilience and ecosystem services provided by the Amazonian rainforest. Given that secondary forests are expanding in Amazonia we argue that this regrowth forest should be taken into account when planning conservation in this region.

Spatial resolution influence on the identification of land cover classes in the Amazon environment

Palavras-chave: Amazon region; Biodiversity; Deforestation; Land use.

Ano: 2019

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000600610

PONZONI,FLÁVIO J.; GALVÃO,LÊNIO S.; EPIPHANIO,JOSÉ C.N..

To evaluate the role played by the spatial resolution in distinguishing land cover classes in the Amazon region, different levels of spatial resolution (60, 100, 120, 200 and 250 meters) were simulated from a Landsat_5 Thematic Mapper (TM) image. Thematic maps were produced by visual interpretation from the original (30 x 30 meters) and simulated set of images. The map legend included primary forest, old and young woody secondary succession, and non-forest. The results indicated that for the discrimination between primary forest and non-forest, spatial resolution did not have great influence for pixel size equal or lower than 200 meters. The contrary was verified for the identification of old and young woody secondary vegetation due to their occurrence in...

Aquatic oligochaeta (Annelida: Clitellata) in extractive reserve Lake Cuniã, Western Brazilian Amazon

Palavras-chave: Spatial resolution; Remote sensing; Amazon region; Thematic maps; Tropical rain forest.

Ano: 2002

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652002000400011

Biota Neotropica

Gomes,Diego Ferreira; Sanches,Nathalie Aparecida Oliveira; Sahm,Lucas Henrique; Gorni,Guilherme Rossi.

Abstract Oligochaeta is one of the most common and abundant taxon in continental aquatic fauna. However, knowledge of their distribution in Brazilian ecosystems is still incomplete and fragmented. Thus, the aim of this study was to develop an inventory of aquatic oligochaetes in the Extractive Reserve of Lake Cuniã in the State of Rondônia, Brazil. Collections of data were performed during the dry (August 2015) and rainy seasons (February 2016). The sediment samples were collected near the lakeside region using the kick sampling method and a kick-net sampler (mesh size of 0.25mm). This paper provides a catalog with 12 taxon from a total of 383 specimens, distributed into two families: Naididae (95.08%) and Opistocystidae (4.92%). The Pristininae subfamily...

First record of Tigrisoma fasciatum (Such, 1825) (Aves: Ardeidae) in the State of Amapá, Brazil and updated species distribution in Central and South America

Palavras-chave: Biodiversity; Aquatic macroinvertebrates; Amazon region; Microdrili.

Ano: 2017

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032017000100305

Biota Neotropica

Kajiki,Lia Nahomi; Togura,Cintia Massumi; Michalski,Fernanda.

The Fasciated Tiger-heron (Tigrisoma fasciatum) is considered endangered in Brazil and Argentina. Although this species has a large range in Central and South America, its records are scattered and scarce. We used a combination of searches in the scientific literature and new field records to provide an updated distributional range of this species. Searches for records and photos of T. fasciatum were conducted using online databases. We also conducted field surveys along the margins of the Araguari and Falsino rivers, in the National Forest of Amapá, a sustainable protected area in the eastern Brazilian Amazon. Our literature review provided a total of 25 new distributional records of T. fasciatum. During our river based surveys we recorded one individual...

The identity of Apostolepis pymi and placement of A. quinquelineata in the synonymy of A. nigrolineata (Serpentes, Xenodontinae)

Palavras-chave: Avifauna; Amazon region; Range extension; FLONA-AP; Protected areas.

Ano: 2013

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400385

Biota Neotropica

Lema,Thales de; Albuquerque,Nelson Rufino de.

The correct application of the names Apostolepis nigrolineata, A. quinquelineata, and A. pymi has been subject of considerable controversy. Based upon review of the literature and the characteristics used to distinguish these species from each other, we conclude that A. pymi is a valid species and that A. quinquelineata is a junior synonym of A. nigrolineata. They differ from each other in hemipenial morphology and coloration. The background color of A. nigrolineata is reddish brown (vs. brown in A. pymi). In addition, only the dorsal region of end of tail is covered by a black band in A. nigrolineata (vs. end of tail completely surrounded by a black band in A. pymi). Both species are sympatrically distributed along the lowlands of Amazonia but A....

Tipo: Info:eu-repo/semantics/other

Palavras-chave: Dipsadidae; Apostolepis; Taxonomy; Synonymization; Amazon region.

Ano: 2010

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032010000100031

Soil attributes under different crop management systems in an Amazon Oxisols

Bragantia

Lopes,Elessandra Laura Nogueira; Fernandes,Antonio Rodrigues; Teixeira,Renato Alves; Sousa,Edna Santos de; Ruivo,Maria de Lourdes Pinheiro.

AbstractSoil biological properties have a high potential for use in assessing the impacts of crop systems. The objective of this study is to evaluate the effects of cropping systems on the biological attributes of an oxisol in the Amazonian state of Pará. The treatments consisted of approximately 20-year-old secondary vegetation, recovered pasture, no-tillage systems (NT) maintained for 4 and 8 years after planting with corn (Zea mays L.) and soybean (Glycine max L.), and conventional tillage (CT) systems every 2 years after planting with rice (Oryza sativa L.) and soybean. The microbial biomass to nitrogen ratio was higher in the NT system (0.68 mg kg–1), and the NT system had greater microbial NT8. Thus, the contributions of organic matter from straw...